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3.3 PT Programming
234 Feature Guide
DISA Intercept Mode [507]
DISA Ring Time before Intercept [508]
DISA No Dial Mode [510]
Feature & Programming References
1.15.6 Direct Inward System Access (DISA)
DISA Security Mode [511]
Note
Trunk Security: Requires the caller to enter a DISA security code assigned in DISA Security Code [512]
before making an outside (CO) line call.
All Security: Requires the caller to enter a DISA security code before making either an outside (CO)
line or intercom call.
No Security: Allows the caller to make either an outside (CO) line or intercom call without entering a
DISA security code.
Feature & Programming References
1.15.6 Direct Inward System Access (DISA)
DISA Security Code [512]
WARNING
There is a risk that fraudulent telephone calls will be made using the Outside-to-Outside (CO-to-CO)
Line Call feature of DISA.
The cost of such calls will be billed to the owner/renter of the PBX.
To protect the PBX from this kind of fraudulent use, we strongly recommend:
a) Enabling DISA security (Trunk Security or All Security).
b) Maintaining the secrecy of passwords.
c) Selecting passwords that are complex and random, so that they cannot be easily guessed.
5 1 0
NEXT STORE END
(Intercept/
Disconnect)
SELECT
5 1 1
NEXT
SELECT
STORE END
(Trunk/All/
None Security)
5 1 2
NEXT
code no. security code
STORE END
(1
…
4) 4
…
10 digits
(0
…
9)
SELECT
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